{"id":486,"date":"2008-06-24T00:31:35","date_gmt":"2008-06-24T05:31:35","guid":{"rendered":"http:\/\/arxivblog.com\/?p=486"},"modified":"2008-06-24T00:31:44","modified_gmt":"2008-06-24T05:31:44","slug":"why-black-holes-could-be-antimatter-factories","status":"publish","type":"post","link":"http:\/\/arxivblog.com\/?p=486","title":{"rendered":"Why black holes could be antimatter factories"},"content":{"rendered":"<p><a href=\"http:\/\/arxivblog.com\/wp-content\/uploads\/2008\/06\/black-hole.jpg\" title=\"Black hole\"><img decoding=\"async\" src=\"http:\/\/arxivblog.com\/wp-content\/uploads\/2008\/06\/black-hole.thumbnail.jpg\" alt=\"Black hole\" \/><\/a><\/p>\n<p>Here&#8217;s an interesting chain of thought&#8230;<\/p>\n<p>Imagine a black hole sucking in protons and electrons. With their higher mass,\u00a0 protons are likely to be preferentially sucked, giving the black hole a positive charge. (That&#8217;s not so unusual in space: a similar mechanism can give planets a charge because electrons escape their gravity more easily.)<\/p>\n<p>But black holes also create such strong electrostatic fields at the horizon that positrons and electrons simply appear out of the vacuum.<\/p>\n<p>In those circumstances, it&#8217;ll look as if the protons being sucked into the black hole are being converted into positrons.<\/p>\n<p>So these kinds of black holes will look and behave like antimatter factories, say Cosimo Bambi from Wayne State University in Detroit and pals.<\/p>\n<p>How might we we spot these exotic objects? Bambi and friends say a sure signature would be an excess of positrons in cosmic rays\u00a0 with an energy between 1 and 100 MeV coming from a black hole.<\/p>\n<p>Anybody seen any of these?<\/p>\n<p>Ref: <a href=\"http:\/\/arxiv.org\/abs\/0806.3440\">arxiv.org\/abs\/0806.3440<\/a>: Black Holes as Antimatter Factories<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s an interesting chain of thought&#8230; Imagine a black hole sucking in protons and electrons. With their higher mass,\u00a0 protons are likely to be preferentially sucked, giving the black hole a positive charge. (That&#8217;s not so unusual in space: a similar mechanism can give planets a charge because electrons escape their gravity more easily.) But [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,13],"tags":[],"class_list":["post-486","post","type-post","status-publish","format-standard","hentry","category-seein-the-light","category-sparks-n-thunderbolts"],"_links":{"self":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=486"}],"version-history":[{"count":0,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/486\/revisions"}],"wp:attachment":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=486"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}